Warp stop motion for looms



AE. S. STHVIPSON.v

WARP STOP MOTION FOR LOOMS.

APPLlcATloN FILED JUNE 4.1921.

Patented Mar. 14, 1922:.

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E. S. STHVIPSON.

WARP STOPy MOTION FOR L'OOMS.

APPLICATION man JUNE 4.1921.

1,409,428. Patented Mar.14,19227.

3 SHEETS-SHEET 2.

E. S. STIIVIPSON. WAHP sToP MOTION FoRwoMs.

, APPLICATION FILED JUNE 4, I92I- Mair: 14,

s SHEETS-SHEET 3.`

Invenoru.

UNITED STATES PATENT ortica.

EDWARDS. sTiMPSoNor HOPEDALE, MASSACHUSETTS, ASQSrGNoR, To" DRAPER CORPORATION, or HOPEDALE, MASSACHUSETTS, A COR-PonAp'rIoivl oEMAiNE.

'WARP s 'ror MOTION non LooMs.

Application filed lune 4',

State ot Massachusetts, have invented an'. Improvement in lVarp Stop .llotions for- Looms, 0f which the following description, in connection with the accompanying drawings, is a specification, like characters on the drawings representing-like parts.

rllhis invention relates to warp stop mechanisms for looms, whereby ythe loom lis brought to rest when a warp thread becomes broken or unduly slacklVhere the main portion of the warp stop motion is supported between the rear of the loom and the heddles, it is desirable that the construction and operation of the warp stop motion be such asnot to interfere with Vthe size of the warp beam or the amount of warp wound on the beam, `and that the tore and aft dimensions yot the warp stop motion proper be such as for ready application to i the loom between the warp beam Vand heddles. A

One of the objects ot the present invention is to provide a warp sto-p motion which shall be simple in construction, eflicientin operation, and wherein the parts shall be so combined and related as to avoid interference with the size ot1 the warp beam vand enable the warp stop motion to be placed between the rear of the loom and the heddles.

-In carrying. the present yinvention into practical effect, the feelers are supported by separate feeler carriers and extend transversely of the loom above the plane of the warp threads. The feeler carriers are given a reciprocating movement simultaneously opposite directions.

Other objects of the invention and novel features and combination of parts will hereinafter be describedin connection with, the accompanying drawings which show one good, practical form of the invention.

In the drawings:

Figure 1 is a sectional `side elevation of a portion of the loom containing the present invention;

Fig, 2 is an enlarged detached perspective view ot the main portions ot a warp stop motion, portions or' which'are broken away; Y

Fig. 3 is a perspective view of the warp stop motion proper, showing the two eeler carriers raised from operative posit-ion, so

Specicationof Letters Fatent.`

I Patented Mar. 14,

1921. .Serial N o, 475,016.

thatfthe loom may be run'without stopping l dueto .a fault in `the warp; and

showing the two vfeeler carriers.

The loom frame lhas mounted at the rear Fig. 4 isan enlarged detachedelevation -portionthereot the warp beam 2, as usual,

and. mounted between the rear ot' the `loom and the heddles is the main 'portion of the warp stop kmotion which is connected by a trainof mechanism to means for stopping the loomwhen a warp thread becomes broken ortoo slack. Thetrain of mechanism for transmittingthe stopping movement to the loommay be variously constructed, but as Shown in Fig. 1*, the Shipper 3, which is normally held in the shipper notch during the running of ythe loom, isv detached from such notch by a train of transmission mechanism when a, warp fault occurs.VV I

The shipper 3 Iis pivotally'mounted at 4f and resting against the shipper is an arm 5 of a lever pivoted to the loom trame at 6 Y and connected by avlink 7 with means 'for turning the lever to detach the shipper from its holding notch on the backward movement of the lay afterk the "occurrence of a warp fault. Y Y Y Asindicated in Figs. 1 and 3, the rear end portion of the link 7 is connected at 8 with an arm 9 pivotally Supported at 10 by va bracket 11. ,The arm 9 also carries the dog 12 provided with Va pin -13 which engages a controller 14 Secured to a rocker 15 supportedkv by the loom side or bracket 11. The

controller 14 is provided' with a slot in which the pin'13l1may move toward and from the front ofthe loom.V lThe-lay 16 carries a of mechanism may be employed for utilizing the arresting action of a drop wire due to a warp fault to stop the loom.

The rocker 15 has secured thereto the arm 1,8 which is connectedby a rod '19 with a transmission arm 2O secured to .a rock-shaft 21' extending transversely of the loom. The

28 of the follower will normally rest upon rock-shaft 21 is provided with an arm 22, Fig. 1, to which is connected the rockshaft actuating rod 23 which extends downwardly and is connected at its lower end at 24 with a follower or lever 25 pivoted at 26 to a stand 27. The follower 25 has an end p0rtion 28 which rides upon the periphery of a cain 29 mounted on the shaft 30 which may conveniently be the under or cam shaft. The follower 25 is under the influence of a spring 31, one end of which is connected to the outer portion of the follower at 32 and the other end of which is connected at a iXed point 33,

A the construction being such that under the yielding influence of the spring 31, the end the cam 29. The rod 23 at its upper portion is provided with a collar 34 between which and the arm 22 is interposed a spring 35, and the upper end of the rod 23 has a hooked portion 36 working in a suitable slot 37 of the arm 22, the construction being such that while the rod 23 mayy impart rocking movement to the rock-shaft 21 in both directions, such rocking movement will be yieldable, so that the rock-shaft may be stopped in its rocking movement in either direction.

At each side of the loom frame is a bracket 38 (Figs. 2 and 3) which may be conveniently connected to the side frames of the loom adjustably, as by the foot portion 39 and a table bracket 40, the two being provided with suitable bolt and slot connections for adjustment, as indicated in Figs. 2 and 3.

The brackets 38, one at each side of the loom, support drop wire guides 41, four of said guides being shown in the present instance. The ends of the guides 41 preferably are received in slotted portions of the brack ets 38 and are held detachably therein by cap-pieces 42 which overlie the ends of the guides and are held to the brackets by suitable bolts 43.

The drop wire guides 41 afford guiding means for the drop wires 44 which, in the present instance of the invention, are provided with elongated slots 45 through which the drop wire guides extend. The drop wires 44 are arranged in rows, as usual in warp stop motions, a'nd are adapted to be supported by the warp threads a. As shown, the drop wires are provided with eyes or openings 46 which in the present instance are below the elongated slots 45, and through the eyes 46 the warp threads a pass, preferably one thread through each eye.

The warp threads are supported by the rods 47 which extend transversely of the loom and are preferably supported by the side brackets 38. f

The feelers which cooperate with the drop wires aremounted upon feeler carriers, two of which form a unit of the warp stop motion, and the feelers are supported above the plane of the warp threads for accessibility of parts and for ready removal from operative relation tol the drop wires when it is desired to run the loom without stopping in response to a fault in the warp. In the present instance the two feeler carriers are similar, and comprise the side members 48 between which extend the feelers 49, two being shown in the present instance of the invention. The ends of the feelers 49 are secured to the side members 48 by means such, for instance, as screws 50, although any appropriate securing means may be employed. The side members 48 of each feeler carrier are connected by a rod 51 to which the side members may be adjustably secured by set screws 52, Figs. 2 and 3. f

Since the feelers are to be supported above the plane of the warp threads and the feeler carriers, together with the feelers, are to be removable from operative relation with the other elements of the warp stop motion when the loom is to be run without stopping in response to a warp fault, the side members of the feeler carrier are supported beyond the ends of the guide bars 41, the eifect being that either or both of the feeler carriers may be readily removed at will from operative relation with its rows of drop wires. As one good means for supporting the feeler carriers beyond the ends of the drop wire guides, the side brackets 38 are provided with supporting guide-ways which permit the feeler carriers to be reciprocated toward and from each other. The guideways, in the present instance, are formed by supporting flanges 53 which project outwardly from the side brackets 38, as best shown by Figs. 2 and 3, and upon the flange 53 ride the shoes 54 carried by the adjacent l end portions ofthe side members 48 of the feeler carriers, the construction being such that the feeler carriers may be readily lifted heightwise of the drop wires, as indicated in Fig. 3, to remove them from operative relation therewith. Y

The rock-shaft 21, hereinbefore described, is preferably supported in bearings carried by the side brackets 38, and in similar location with respect to the side brackets 38 is a. second rock-shaft 55. Each of the rock shafts 21 and 55 have extending therefrom the arm 56 formed with open or bifurcated ends v57 adapted to be detachably engaged with the end portions of the rods 51 extending between the side members of'each of the fee-ler carriers, when such feeler carriers are in operative position, as indicated in Fig. 1. The rock-shafts 21 and 55 are connected for rocking movements in unison in opposite directions, and as a good form of means to this end each rock-shaft has extending therefrom an arm 58, one of which .carries a pin 59 which operates in the bifurcated end portion 60 ofthe other arm, as indicated in Figs. 2 and 3, the construction being such that upon rocking movementbeing imparte'dto one of the rock-shafts, as 2l, throughthe mechanism 4"hereinbefore described, 'such rocking movement is transmitted to the'other rock-shaft, but in the opposite direction, vand the two eeler ycarriers vare consequently given reciprocating movements'in opposite. directions'. l*

Vhen the drop wires' arefsuppo'rted :in

their rai'sedposition by normal warp threads,

the twofeeler carriers may partake of their reciprocating detecting movements ltoward and from each other, and the loom will, continue to run. vflieri,however, a warp thread breaks oriibecomes too*k slack', Ithe lsupported drop wire'willfdrop, therebyY bringing its widened 'or enlarged' open"v portion, lin the present' instance, into' the pat-h of movement 'of thecooperating i'eelergthereby arresting the feeler andthe "two feeler carriersl and effecting lloom"'stoppage through the vtrain ofmechanismfhereinbefore described. y

`lVhen it is desired to run the loom without stoppingin response tol a fault in the v\r"arp,'the loomr attendant may: raise the two feeler carriers fromtheir o'perativerelation with the drop wires, .as indicated in Fig. 3, thereby 'deta'ching the feelerY .carriers from their actuating means, and the loom may continue to run until the attendant re.- places the feeler carriers in operative position. Should it be desired to remove the warp from the loomV with the drop wires and the drop wire guides, as is the case when a new warp is to be drawn or tied in, the feeler carriers may be moved from their operative to their inoperative `position or lifted as indicated in Fig. 3, whereupon the drop wire guides and drop wires may be detached from the supporting side brackets and they, together with the warp, may then be taken into the drawing-in or tying-in machine.

That is claimed is: v Y

l. In a warp stop motion for looms, the combination of a series of drop Wires arranged in parallel rows, two teeler carriers, teelers supported by the feeler carriers above the plane of the warp threads, means for causing movements of the feeler carriers toward and from each other, and means for eil'ecting looml stoppage when the movement of either feeler is arrested by a drop wire.

2. In a warp stop motion Jfor looms, the combination of a series of drop wires arranged in parallel rows, drop wire guides, two i'eeler carriers each provided with a feeler for acting upon the drop wires in a plane above the warp threads, and means for causing detecting movements of the feeler carriers and feelers simultaneously toward and from. each other, and means for stopping the loom when o ne of the feelers is arrested by a drop wire.

:In afwarp Vstop motion for looms, the combinat'i'on"fot'a. series "of 'drop wires' arl rangedfin` parallel .'rows, a'drop wire guide 'passing through the drop wires yot each'row,

'two feelerfcarriers eachsupporting a e'eler fab'ov'e' the plane of the warp threads4 that the' feelers `ma-y be removed" from voperative relation "'with the rowsof drop 'wires by movementsof'thefeelers heightwise of the Idrop wires, means 'for causing 'reciprocating 4combination of aiseriesfofV drop wires'ar- 'ranged 1n parallel rows,A drop wire guides,

'snpportsl forv lsupporting theyend portions ofthe "dropfwireguides, two feeler carriers having sidemembe'rs' supportedl for' reciprocatmgjmovements outside the drop wire guidefsupports, feelers eXtendi-ngi between the side members of the feeler carriers above thewaijp threads, and means for 'recipro- 'eating vtheV ytwo feeler carriers'toward'and it'rom'jeach'jother.

Y'5f-InawarpstOpmOtiOn for looms, the combination of a. series of drop wires` arranged in parallel rows, drop wire guides, brackets at opposite sides of the loom for supporting the drop wire guides, two feeler carriers having side members supported beyond the ends of the drop wire guide and having feelers which extend between the side members of the carriers above the plane of the warp threads that the feeler carriers may be free for movement upwardlyifrom operative position, and means for simultaneously reciprocating the feeler carriers toward and from each other.

6. In a warp stop motion for looms, the combination ofV aseries of drop wires arranged in parallel rows, drop wire guides, two feeler carriers, feelers carried thereby above the plane of the Warp thread, means for supporting and reciprocating the two Vieeler carriers beyond the ends of the drop wire guides constructed and arranged to permit the feeler carriers tobe raised from operative position when the loom is to be run without stopping due to a warp fault.

7 VIn a warp stop motion for looms, the i combination of brackets adjustably secured to each side of the loom, drop wire guides supported by the brackets, two feeler carriers supported by the brackets outside the end portions of the'drop wire guides and carrying feelers which -extend above the` .brackets and warp threads, means for imparting feeler detecting movements to the feeler carriers, and means for stopping the y loom when the movement of av feeler carrier is arrested by a drop wire. y 8. In a warp stop motion for looms, the

combination .of bracketsl adjustably secured to each side of the loom, dropwires, drop Wire guides supported by the brackets, two eeler carriers supported by the brackets outside the endrportions of the drop wire guides and carrying feelers which extend above the brackets and warp threads, a rockshaft carried by the brackets, means for rocking the rock-shaft, and connections between the rock-shaft and the feeler carriers for reciprocating the feeler carriers inY op posite directions. ;9. .In a warp stop motion for looms, the vcombination of a bracket at each side of the loom, drop wires, drop Wire guides supported by the brackets, two rock-shafts, two feeler carriers, feelers mounted onthe feeler carriers above the plane of the Warp threads, Yconnections between each rock-shaft and one of the feeler carriers, connections between the rock-shaft which effect simultaneous movement ofthe feeler carriers toward and Jfrom each other, and means for rocking one of the rock-shafts. i y Y l0. In a warp stop motion for looms, the combination of brackets at each sidey ofV the loom, a series of drop wires arranged in parallel rows, two feeler carriers mounted outside the ends of the rows of drop wires, eelers mounted on the eeler carriers above the planeof the Warp threads, rock-shaftsl extending transversely of the loom and each detachably connected to onel of the eeler y carriers for imparting reciprocating movesimultaneously toward and from each other, Y

a series of drop wires arranged in parallel rows, and means for stopping theloom when one of the feeler carriers isl arrested by a drop wire.

In testimony whereof, I have signedmy 'y name to this specification.

EDWARD S. STIMPSON. 

